with(plots);
sigma2q:=0.3;
h1:=(x1,x2)->exp(-((x1-0.0)^2+(x2-0.0)^2)/sigma2q): # Basisfunktionen hi(x1, x2) der Repr\303\244sentanten
h2:=(x1,x2)->exp(-((x1-1.0)^2+(x2-0.0)^2)/sigma2q):
h3:=(x1,x2)->exp(-((x1-0.0)^2+(x2-1.0)^2)/sigma2q):
h4:=(x1,x2)->exp(-((x1-1.0)^2+(x2-1.0)^2)/sigma2q);
v1:=0.0: # Werte der Repr\303\244sentanten
v2:=1.0:
v3:=1.0:
v4:=0.0;
zaehler:=(x1,x2)->(v1*h1(x1,x2)+v2*h2(x1,x2)+v3*h3(x1,x2)+v4*h4(x1,x2));
nenner:=(x1,x2)->(h1(x1,x2)+h2(x1,x2)+h3(x1,x2)+h4(x1,x2));
RB:=(x1,x2)->zaehler(x1,x2)/nenner(x1,x2);
plot3d(RB(i1,i2), i1=0..1, i2=0..1, axes=boxed, style=patch, shading=zhue);
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